The nor’easter will weaken tonight, easing beach conditions and coastal flooding, though locally heavy rain will continue in parts of the Mid-Atlantic and New England into Monday. Hurricane Nolo continues to bring strong winds and large waves to Hawaii. A multi-day rain event will return to the Four Corners region Monday and expand to the south-central U.S. by midweek. Read More >
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Overview
Radar
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6-hour radar loop (4 PM - 10 PM). Storms after 10 PM were sub-severe. |
Environment
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| Convective Available Potential Energy (CAPE), or a measure of "fuel" for thunderstorms at 5 PM. Values above 4,000 J/kg are supportive of explosive thunderstorm development. | Wind shear, or change of wind direction and speed from the surface to about 20,000 feet. Values are generally below 30 knots which is not particularly supportive of supercell (rotating) storms. | Microburst composite parameter, which highlights regions favorable for intense microbursts/downbursts. Values were exceptionally high over northern and central Illinois. |
Additional Information
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Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. Additional recaps can be found on the NWS Chicago Past Events Page |
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